"Why do worms taste like chewing gum" joke

Ya mama so fat the only thing stopping her from going to Jenny Craig is the door.

A Sri Lankan is calmly having his breakfast when an American, typically chewing gum, sits down beside him. The Sri Lankan ignores the American who begins to chat:

The American: Do you eat that bread-entirely?
The Sri Lankan: Of course!
The American: We do more...

Your Mamma's so fat, when she went bungee jumping, she broke the bridge!

You mamma is soo fat she sat on a rainbow and skittles popped out!

Your momma is so fat when she fell in the grand canyon she got stuck half way down.